Having traveled in SE Asia (but never having been arrested) I can easily imagine that being in prison there...particularly as a Westerner...would be a noticeably unpleasant experience.
Back in 1979-77, I was assigned, every 6th day, to accompany the US Navy Shore Patrol in Olongapo City as the USMC representative, whenever our battalion was in port at Subic Bay. Olongapo had about every sexual perversion known to man back then. I suppose several dozen new perversions have been invented in the past 40+ years.
When our battalion was back on Okinawa, we had a young enlisted Marine "roll" a drunk Okinawan man. I was assigned to be the observer for the USMC and the USA at his trial. Their country, their law, their citizen, so we had no say - just observe. IIRC, he may have had a USMC JAG officer as an advisor, not legal defense. The "word" was that unless you had someone bringing you additional food, you might not survive a two year sentence...
"Keep your nose clean"